H3C S7500 Series Ethernet Switches Release 3135 DHCP Configuration Examples
Routing Configuration Examples
H3C S7500 Series Ethernet Switches Release 3135 Chapter 2 Configuration Examples
2-20
[SwitchD-bgp] undo synchronization
[SwitchD-bgp] group in internal
[SwitchD-bgp] peer 195.1.1.2 group in
[SwitchD-bgp] peer 194.1.1.2 group in
z To validate the configuration, you need to use the reset bgp all command on all the
BGP peers.
z Since the MED attribute of route 1.0.0.0 learned by Switch C is smaller than that
learned by Switch B, Switch D selects the route 1.0.0.0 from Switch C.
z If you do not configure MED attribute control on Switch A, setting the local
preference attribute for route 1.0.0.0 on Switch C is another choice.
# Define ACL 2000 to permit the routes destined for 1.0.0.0/8.
[SwitchC] acl number 2000
[SwitchC-acl-basic-2000] rule permit source 1.0.0.0 0.255.255.255
[SwitchC-acl-basic-2000] rule deny source any
[SwitchC-acl-basic-2000] quit
# Create a routing policy named localpref, and specify node 10 with the permit
matching mode for the routing policy. Set the local preference value of the route
matching ACL 2000 to 200
[SwitchC] route-policy localpref permit node 10
[SwitchC-route-policy] if-match acl 2000
[SwitchC-route-policy] apply local-preference 200
[SwitchC-route-policy] quit
# Create a routing policy named localpref, and specify node 20 with the permit
matching mode for the routing policy. Set the local preference value of the route to 100.
[SwitchC] route-policy localpref permit node 20
[SwitchC-route-policy] apply local-preference 100
[SwitchC-route-policy] quit
# Apply the routing policy localpref to the routing information from the peer 193.1.1.1
(Switch A).
[SwitchC] bgp 200
[SwitchC-bgp] peer 193.1.1.1 route-policy localpref import
Since the local preference (200) of the route learned by Switch C is bigger than that
learned by Switch B (100), Switch D prefers the route 1.0.0.0 from Switch C. Note that
the local preference is not set for route 1.0.0.0 on Switch B, so the route uses the
default value 100.